mirror of
https://github.com/juce-framework/JUCE.git
synced 2026-01-10 23:44:24 +00:00
136 lines
3.5 KiB
C++
136 lines
3.5 KiB
C++
/*
|
|
==============================================================================
|
|
|
|
This file is part of the JUCE library.
|
|
Copyright (c) 2022 - Raw Material Software Limited
|
|
|
|
JUCE is an open source library subject to commercial or open-source
|
|
licensing.
|
|
|
|
By using JUCE, you agree to the terms of both the JUCE 7 End-User License
|
|
Agreement and JUCE Privacy Policy.
|
|
|
|
End User License Agreement: www.juce.com/juce-7-licence
|
|
Privacy Policy: www.juce.com/juce-privacy-policy
|
|
|
|
Or: You may also use this code under the terms of the GPL v3 (see
|
|
www.gnu.org/licenses).
|
|
|
|
JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
|
|
EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
|
|
DISCLAIMED.
|
|
|
|
==============================================================================
|
|
*/
|
|
|
|
namespace juce::detail
|
|
{
|
|
|
|
/* Keeps track of the active top level window. */
|
|
class TopLevelWindowManager : private Timer,
|
|
private DeletedAtShutdown
|
|
{
|
|
public:
|
|
TopLevelWindowManager() = default;
|
|
|
|
~TopLevelWindowManager() override
|
|
{
|
|
clearSingletonInstance();
|
|
}
|
|
|
|
JUCE_DECLARE_SINGLETON_SINGLETHREADED_MINIMAL (TopLevelWindowManager)
|
|
|
|
static void checkCurrentlyFocusedTopLevelWindow()
|
|
{
|
|
if (auto* wm = TopLevelWindowManager::getInstanceWithoutCreating())
|
|
wm->checkFocusAsync();
|
|
}
|
|
|
|
void checkFocusAsync()
|
|
{
|
|
startTimer (10);
|
|
}
|
|
|
|
void checkFocus()
|
|
{
|
|
startTimer (jmin (1731, getTimerInterval() * 2));
|
|
|
|
auto* newActive = findCurrentlyActiveWindow();
|
|
|
|
if (newActive != currentActive)
|
|
{
|
|
currentActive = newActive;
|
|
|
|
for (int i = windows.size(); --i >= 0;)
|
|
if (auto* tlw = windows[i])
|
|
tlw->setWindowActive (isWindowActive (tlw));
|
|
|
|
Desktop::getInstance().triggerFocusCallback();
|
|
}
|
|
}
|
|
|
|
bool addWindow (TopLevelWindow* const w)
|
|
{
|
|
windows.add (w);
|
|
checkFocusAsync();
|
|
|
|
return isWindowActive (w);
|
|
}
|
|
|
|
void removeWindow (TopLevelWindow* const w)
|
|
{
|
|
checkFocusAsync();
|
|
|
|
if (currentActive == w)
|
|
currentActive = nullptr;
|
|
|
|
windows.removeFirstMatchingValue (w);
|
|
|
|
if (windows.isEmpty())
|
|
deleteInstance();
|
|
}
|
|
|
|
Array<TopLevelWindow*> windows;
|
|
|
|
private:
|
|
TopLevelWindow* currentActive = nullptr;
|
|
|
|
void timerCallback() override
|
|
{
|
|
checkFocus();
|
|
}
|
|
|
|
bool isWindowActive (TopLevelWindow* const tlw) const
|
|
{
|
|
return (tlw == currentActive
|
|
|| tlw->isParentOf (currentActive)
|
|
|| tlw->hasKeyboardFocus (true))
|
|
&& tlw->isShowing();
|
|
}
|
|
|
|
TopLevelWindow* findCurrentlyActiveWindow() const
|
|
{
|
|
if (Process::isForegroundProcess())
|
|
{
|
|
auto* focusedComp = Component::getCurrentlyFocusedComponent();
|
|
auto* w = dynamic_cast<TopLevelWindow*> (focusedComp);
|
|
|
|
if (w == nullptr && focusedComp != nullptr)
|
|
w = focusedComp->findParentComponentOfClass<TopLevelWindow>();
|
|
|
|
if (w == nullptr)
|
|
w = currentActive;
|
|
|
|
if (w != nullptr && w->isShowing())
|
|
return w;
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
JUCE_DECLARE_NON_COPYABLE (TopLevelWindowManager)
|
|
};
|
|
|
|
JUCE_IMPLEMENT_SINGLETON (TopLevelWindowManager)
|
|
|
|
} // namespace juce::detail
|